https://llvm.org/bugs/show_bug.cgi?id=25495
Bug ID: 25495
Summary: Inline assembly does not support macro
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: oliv...@labapart.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
clang does not support assembly macro when defined with inline assembly. GCC
supports it and produce the expected binary.
This use case is actually present in newlib source code
(https://sourceware.org/newlib/).
Source code:
-------- hello.c ----------------
asm(".macro COPY\n\t"
"mov r0, r1\n\t"
".endm"
);
int main(void) {
asm ("COPY\n");
return 0;
}
---------------------------------
Here is the error generated by clang:
$ clang-3.8 -target arm-none-eabi -c hello.c
hello.c:7:8: error: invalid instruction mnemonic 'copy'
asm ("COPY\n");
^
<inline asm>:1:2: note: instantiated into assembly here
COPY
^~~~
1 error generated.
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